{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2025-40311 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2025-40311 is a denial of service vulnerability in Linux, published on 8 Dec 2025. It can only be exploited from the same machine or local network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2025-40311 and fix it if it is affected.\n\nWhat it is: CVE-2025-40311 is a denial of service vulnerability in Linux, published on 8 Dec 2025. It can only be exploited from the same machine or local network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2025-40311 in the wild and no public exploit code.\n\nAffected product: Linux. No package-level version data is available, so check the vendor advisory linked from the reference page.\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2025-40311/ (Markdown: https://insights.sbomify.com/CVE-2025-40311/index.md)","id":"CVE-2025-40311","markdown":"https://insights.sbomify.com/CVE-2025-40311/index.md","name":"CVE-2025-40311","record":{"aliases":["BELL-CVE-2025-40311","DEBIAN-CVE-2025-40311","GHSA-g3pf-jp95-cjc3","ROOT-OS-DEBIAN-11-CVE-2025-40311","ROOT-OS-DEBIAN-12-CVE-2025-40311","ROOT-OS-DEBIAN-13-CVE-2025-40311","ROOT-OS-UBUNTU-2204-CVE-2025-40311","ROOT-OS-UBUNTU-2404-CVE-2025-40311","UBUNTU-CVE-2025-40311"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":true,"product_category":"Linux kernel driver","requires_auth":"low_privilege","summary":"A local attacker can trigger a kernel crash in the Habanalabs driver by mapping coherent memory when IOMMU is enabled, causing a denial of service.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Linux","cpe":[],"cvss":{"score":null,"severity":null,"source":null,"vector":null,"version":null},"cwes":[],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\naccel/habanalabs: support mapping cb with vmalloc-backed coherent memory\n\nWhen IOMMU is enabled, dma_alloc_coherent() with GFP_USER may return\naddresses from the vmalloc range. If such an address is mapped without\nVM_MIXEDMAP, vm_insert_page() will trigger a BUG_ON due to the\nVM_PFNMAP restriction.\n\nFix this by checking for vmalloc addresses and setting VM_MIXEDMAP\nin the VMA before mapping. This ensures safe mapping and avoids kernel\ncrashes. The memory is still driver-allocated and cannot be accessed\ndirectly by userspace.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"accel/habanalabs: support mapping cb with vmalloc-backed coherent memory","id":"CVE-2025-40311","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"denial_of_service","year":"2025"},"n_packages":0,"n_references":4,"next":{"headline":"jfs: Verify inode mode when loading from disk","id":"CVE-2025-40312"},"packages":[],"prev":{"headline":"amd/amdkfd: resolve a race in amdgpu_amdkfd_device_fini_sw","id":"CVE-2025-40310"},"products":["Linux"],"published":"2025-12-08","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2026-05-11","vendors":["Linux"]},"summary":"A local attacker can trigger a kernel crash in the Habanalabs driver by mapping coherent memory when IOMMU is enabled, causing a denial of service.","url":"https://insights.sbomify.com/CVE-2025-40311/"}